The writing process for the majority of Metallicaâs albums have followed the same process. A large slew of guitar riffs written primarily by James Hetfield, sometimes Kirk Hammett, and rarely the bandâs bass player, (that now being bass virtuoso Robert Trujillo) are reviewed and selected.
Lucknow, India (annual mean PM2.5, ug/m3: 96) The capital city of Uttar Pradesh is among the most polluted cities in the country. The lack of transport infrastructure and growing number of vehicles exacerbates the problem, according to India's Centre for Science and Environment.
Follow @TIME. Ulan Bator, Mongoliaâthe second-most polluted city in the world. Credit: Doug Kanter / Bloomberg / Getty Images. Environmentalists here in the U.S. are not happy with President Obama, in part because he pulled back on a promise to tighten ground-level ozone and smog standards for air pollution.ir pollutionâboth indoor and outdoorâis a major health hazard. The WHO estimates that over 2 million people a year die prematurely from bad airâmost of them in poor countries and cities. Thatâs greater than the annual death toll from HIV/AIDS.